Improvement in wrenches



J. RILEY. (WRENCH.

Patented. Feb.

N. PETERS. PHOTO-UT U ITED STATES PATENT OFFICE,

JOHN RILEY, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN WRENCHES'.

Specification forming part of Letters Patent No. 174,155, dated February29, 1876; applica ion filed January 31, 1876.

To all whom it may concern:

Be it known that I, JOHN RILEY, of Boston, in the county of Suffolk andState of Massachusetts, have invented an Improved. Adjustable Wrench, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings making part of thisspecification, in which- Figure 1 is a perspective view of a wrenchconstructed in accordance with my invention. Fig. 2 is a perspectiveview of the same, the adjustable jaw being removed. Fig. 3 is aperspective view of the adjustable jaw. Fig. 4is a transverse sectionthrough both jaws and, the portion of the wrench between them.

In many positions where it is desired to tighten or loosen a nut, thereis not suflicient space to applyand turn a monkey-wrench, and even itanother description of wrench could be used, it is not capable of beingad justed to nuts of different sizes, rendering it oftentimes necessaryto employ several wrenches for difl'erent-sized nuts. To supply theabove-mentioned need is the object of my invention, which consists in arod or shank having a handle and provided with a stationary jaw, and aportion having a screw-thread for a movable jaw to turn on, the latterbeing, clamped when adjusted in place by a binding screw a wrench soconstructed being suitable for use and readily adjusted to nuts ofdifferent sizes located in positions difficult of access, where ordinaryadjustable wrenches cannot be employed to advantage.

'To enable others skilled in the art to underderstand and use myinvention, I will proceed to describe the manner in which I have carriedit out.

In the said drawings, A represents a cylindrical rod or shank, providedat one extremity with a cross-bar, a, at right angles. thereto, whichserves as a handle. The opposite extremity of the rod or shank A isprovided with a stationary jaw, b, which is at right angles to the rodA, and also to its handle a.

A portion, 0, provided with a screw-thread, projects out at right anglesfrom the shank A at the end provided with the stationary jaw b,

the screw portion 0 being also at right angles thereto. Over the screwportion 0 turns a movable jaw, d, which may thus be moved.

toward or away from the jaw 12, in order that the wrench may be adaptedfor nuts of different sizes; this jaw (I, when adjusted, being heldrigidly in place by a clamping-screw, e, which passes through the headof the jaw 01,

and bears against a flattened side, h, of the cally, or nearly so, andwhere the ordinary wrenches are not adapted for turning the not onaccount of the handle coming into contact with the bowl.

Instead of the screw 0,, any other suitable clamping device may beemployed.

The relative direction of the stationary jaw with respect to the shank amay be changed if desired; for instance, it may project out in linetherewith and form a continuation thereof, or it may be situated on theother side of the shank and form a right or other angletherewith, inwhich case the position of the screw portion 0 must be made tocorrespond therewith- What I claim as my invention, and desire to secureby Letters Patent, is-

The shank A, with its stationary jaw b and screw portion 0, incombination with the movable jaw cl and a clamping device, substantiallyas and for the purpose described.

Witness my hand this 24th day of J annary, A. D. 1876.

JOHN RILEY. In presence of- N. W. STEARNS, P. E. TEsoHEMAoHER.

